Adherence to low-dose methotrexate in children with juvenile idiopathic arthritis using a sensitive methotrexate assay. - Möhlmann, Julia E.; de Roock, Sytze; Egas, Annelies C.; Weijden, Evelien ter; Doeleman, Martijn J. H.; Huitema, Alwin D. R.; van Luin, Matthijs; Swart, Joost F. (Pediatric Rheumatology, 2024)